One of the better established visual novel translation groups is
mirror moon, the group 'responsible' for the English localisations of
Tsukihime,
Tsukihime Plus+Disc,
Melty Blood,
Melty Blood: ReACT and
Utawarerumono (this was a joint with
Soylations).
Their translator, Takajun, was also the translator for the first
Kara no Kyoukai movie,
Fukan Fūkei (the fansubbing of it was done by the group
gg). With a great number of successful projects under his belt, mirror moon's translation accuracy appears to be very good.
mirror moon focusses mostly on TYPE-MOON games, and is currently working on
Fate/Stay Night (the translation of the last route,
Heaven's Feel, is just past 80% at the time of writing this post). There is no indication whether they will work on
Fate/Tiger Colosseum, but it is almost certain they will not be working on
Fate/Hollow Ataraxia or
Kagetsu Tohya as there already exist two translation 'groups' for the former and a complete English patch for the latter.
The other major project that is in progress is
Men at Work! 2, which is currently going through beta testing.
In regards to the large amount of piracy that occurs with visual novels (as they are difficult to procure over seas), this group takes the policy of 'don't ask, don't tell'. Of course, there are some people that don't read the rules, and/or don't realise that what they're saying makes it obvious that they have pirated the game...
